Orchestration for Robotic Process Automation

ABSTRACT

An example embodiment may involve persistent storage containing definitions of (i) assignments of bots to endpoints, (ii) software packages for execution by the bots, (iii) schedules for the bots to execute the software packages, and (iv) processes that associate the bots with the software packages and the schedules. This embodiment may also involve processors configured to: receive, from a computing device, a request for bot deployment, wherein the computing device includes a bot runtime; identify, in the processes, a bot assigned to an endpoint that is associated with the computing device, wherein the bot is associated with a software package and a schedule; and transmit, to the computing device, data including a representation of the bot, a copy of the software package, and a copy of the schedule, wherein reception of the data causes the bot to execute, using the bot runtime, the software package in accordance with the schedule.

BACKGROUND

Robotic process automation (RPA) can be used within computing systems to automate certain routine or repetitive tasks, such as scanning documents for keywords or phrases, sorting data into categories, moving files from one location to another, obtaining information from or writing information to a server or database, generating analytics, and so on. The motivation for RPA is largely in its ability to offload mundane work from various individuals. In this way, these individuals can spend more time on higher-level complex tasks that are more difficult or impossible to automate. In some cases, RPA may involve a degree of artificial cognition (e.g., by employing machine learning models) in order to make predictions or classifications. Thus, enterprises and other organizations can deploy software “bots” (e.g., programs, scripts, etc.) on computing devices to carry out these tasks.

SUMMARY

The embodiments herein provide an architecture for orchestration of RPA on a managed network. This architecture provides significant flexibility in terms of how bots are assigned to host computing devices or users, how tasks (in the form of software packages) are assigned to bots, and how bots are instructed to execute tasks according to schedules. The orchestration may take place on a remote system that, by way of device and software discovery, has a mapping of relationships between hardware devices and software deployed on the managed network. Advantageously, the architecture may add further information relating to bot operation to this framework.

Accordingly, a first example embodiment may involve persistent storage containing definitions of (i) assignments of bots to endpoints, (ii) software packages for execution by the bots, (iii) schedules for the bots to execute the software packages, and (iv) processes that associate the bots with the software packages and the schedules. The first example embodiment may also involve one or more processors configured to: receive, from a computing device, a request for bot deployment, wherein the computing device includes a bot runtime; identify, in the processes, a bot assigned to an endpoint that is associated with the computing device, wherein the bot is associated with a software package and a schedule; and transmit, to the computing device, data including a representation of the bot, a copy of the software package, and a copy of the schedule, wherein reception of the data causes the bot to execute, using the bot runtime, the software package in accordance with the schedule.

A second example embodiment may involve receiving, from a computing device, a request for bot deployment, wherein the computing device includes a bot runtime, and wherein persistent storage contains definitions of (i) assignments of bots to endpoints, (ii) software packages for execution by the bots, (iii) schedules for the bots to execute the software packages, and (iv) processes that associate the bots with the software packages and the schedules. The second example embodiment may also involve identifying, in the processes, a bot assigned to an endpoint that is associated with the computing device, wherein the bot is associated with a software package and a schedule. The second example embodiment may also involve transmitting, to the computing device, data including a representation of the bot, a copy of the software package, and a copy of the schedule, wherein reception of the data causes the bot to execute, using the bot runtime, the software package in accordance with the schedule.

In a third example embodiment, an article of manufacture may include a non-transitory computer-readable medium, having stored thereon program instructions that, upon execution by a computing system, cause the computing system to perform operations in accordance with the first and/or second example embodiment.

In a fourth example embodiment, a computing system may include at least one processor, as well as memory and program instructions. The program instructions may be stored in the memory, and upon execution by the at least one processor, cause the computing system to perform operations in accordance with the first and/or second example embodiment.

In a fifth example embodiment, a system may include various means for carrying out each of the operations of the first and/or second example embodiment.

These, as well as other embodiments, aspects, advantages, and alternatives, will become apparent to those of ordinary skill in the art by reading the following detailed description, with reference where appropriate to the accompanying drawings. Further, this summary and other descriptions and figures provided herein are intended to illustrate embodiments by way of example only and, as such, that numerous variations are possible. For instance, structural elements and process steps can be rearranged, combined, distributed, eliminated, or otherwise changed, while remaining within the scope of the embodiments as claimed.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a schematic drawing of a computing device, in accordance with example embodiments.

FIG. 2 illustrates a schematic drawing of a server device cluster, in accordance with example embodiments.

FIG. 3 depicts a remote network management architecture, in accordance with example embodiments.

FIG. 4 depicts a communication environment involving a remote network management architecture, in accordance with example embodiments.

FIG. 5 depicts another communication environment involving a remote network management architecture, in accordance with example embodiments.

FIG. 6 depicts an architecture for orchestration of RPA, in accordance with example embodiments.

FIG. 7 depicts a database schema, in accordance with example embodiments.

FIG. 8 depicts domain separation for bot deployments, in accordance with example embodiments.

FIG. 9 depicts credential sets for bots, in accordance with example embodiments.

FIG. 10 depicts queue support for bots, in accordance with example embodiments.

FIG. 11 is a flow chart, in accordance with example embodiments.

DETAILED DESCRIPTION

Example methods, devices, and systems are described herein. It should be understood that the words “example” and “exemplary” are used herein to mean “serving as an example, instance, or illustration.” Any embodiment or feature described herein as being an “example” or “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments or features unless stated as such. Thus, other embodiments can be utilized and other changes can be made without departing from the scope of the subject matter presented herein.

Accordingly, the example embodiments described herein are not meant to be limiting. It will be readily understood that the aspects of the present disclosure, as generally described herein, and illustrated in the figures, can be arranged, substituted, combined, separated, and designed in a wide variety of different configurations. For example, the separation of features into “client” and “server” components may occur in a number of ways.

Further, unless context suggests otherwise, the features illustrated in each of the figures may be used in combination with one another. Thus, the figures should be generally viewed as component aspects of one or more overall embodiments, with the understanding that not all illustrated features are necessary for each embodiment.

Additionally, any enumeration of elements, blocks, or steps in this specification or the claims is for purposes of clarity. Thus, such enumeration should not be interpreted to require or imply that these elements, blocks, or steps adhere to a particular arrangement or are carried out in a particular order.

I. Introduction

A large enterprise is a complex entity with many interrelated operations. Some of these are found across the enterprise, such as human resources (HR), supply chain, information technology (IT), and finance. However, each enterprise also has its own unique operations that provide essential capabilities and/or create competitive advantages.

To support widely-implemented operations, enterprises typically use off-the-shelf software applications, such as customer relationship management (CRM) and human capital management (HCM) packages. However, they may also need custom software applications to meet their own unique requirements. A large enterprise often has dozens or hundreds of these custom software applications. Nonetheless, the advantages provided by the embodiments herein are not limited to large enterprises and may be applicable to an enterprise, or any other type of organization, of any size.

Many such software applications are developed by individual departments within the enterprise. These range from simple spreadsheets to custom-built software tools and databases. But the proliferation of siloed custom software applications has numerous disadvantages. It negatively impacts an enterprise's ability to run and grow its operations, innovate, and meet regulatory requirements. The enterprise may find it difficult to integrate, streamline, and enhance its operations due to lack of a single system that unifies its subsystems and data.

To efficiently create custom applications, enterprises would benefit from a remotely-hosted application platform that eliminates unnecessary development complexity. The goal of such a platform would be to reduce time-consuming, repetitive application development tasks so that software engineers and individuals in other roles can focus on developing unique, high-value features.

In order to achieve this goal, the concept of Application Platform as a Service (aPaaS) is introduced, to intelligently automate workflows throughout the enterprise. An aPaaS system is hosted remotely from the enterprise, but may access data, applications, and services within the enterprise by way of secure connections. Such an aPaaS system may have a number of advantageous capabilities and characteristics. These advantages and characteristics may be able to improve the enterprise's operations and workflows for IT, HR, CRM, customer service, application development, and security. Nonetheless, the embodiments herein are not limited to enterprise applications or environments, and can be more broadly applied.

The aPaaS system may support development and execution of model-view-controller (MVC) applications. MVC applications divide their functionality into three interconnected parts (model, view, and controller) in order to isolate representations of information from the manner in which the information is presented to the user, thereby allowing for efficient code reuse and parallel development. These applications may be web-based, and offer create, read, update, and delete (CRUD) capabilities. This allows new applications to be built on a common application infrastructure. In some cases, applications structured differently than MVC, such as those using unidirectional data flow, may be employed.

The aPaaS system may support standardized application components, such as a standardized set of widgets for graphical user interface (GUI) development. In this way, applications built using the aPaaS system have a common look and feel. Other software components and modules may be standardized as well. In some cases, this look and feel can be branded or skinned with an enterprise's custom logos and/or color schemes.

The aPaaS system may support the ability to configure the behavior of applications using metadata. This allows application behaviors to be rapidly adapted to meet specific needs. Such an approach reduces development time and increases flexibility. Further, the aPaaS system may support GUI tools that facilitate metadata creation and management, thus reducing errors in the metadata.

The aPaaS system may support clearly-defined interfaces between applications, so that software developers can avoid unwanted inter-application dependencies. Thus, the aPaaS system may implement a service layer in which persistent state information and other data are stored.

The aPaaS system may support a rich set of integration features so that the applications thereon can interact with legacy applications and third-party applications. For instance, the aPaaS system may support a custom employee-onboarding system that integrates with legacy HR, IT, and accounting systems.

The aPaaS system may support enterprise-grade security. Furthermore, since the aPaaS system may be remotely hosted, it should also utilize security procedures when it interacts with systems in the enterprise or third-party networks and services hosted outside of the enterprise. For example, the aPaaS system may be configured to share data amongst the enterprise and other parties to detect and identify common security threats.

Other features, functionality, and advantages of an aPaaS system may exist. This description is for purpose of example and is not intended to be limiting.

As an example of the aPaaS development process, a software developer may be tasked to create a new application using the aPaaS system. First, the developer may define the data model, which specifies the types of data that the application uses and the relationships therebetween. Then, via a GUI of the aPaaS system, the developer enters (e.g., uploads) the data model. The aPaaS system automatically creates all of the corresponding database tables, fields, and relationships, which can then be accessed via an object-oriented services layer.

In addition, the aPaaS system can also build a fully-functional application with client-side interfaces and server-side CRUD logic. This generated application may serve as the basis of further development for the user. Advantageously, the developer does not have to spend a large amount of time on basic application functionality. Further, since the application may be web-based, it can be accessed from any Internet-enabled client device. Alternatively or additionally, a local copy of the application may be able to be accessed, for instance, when Internet service is not available.

The aPaaS system may also support a rich set of pre-defined functionality that can be added to applications. These features include support for searching, email, templating, workflow design, reporting, analytics, social media, scripting, mobile-friendly output, and customized GUIs.

Such an aPaaS system may represent a GUI in various ways. For example, a server device of the aPaaS system may generate a representation of a GUI using a combination of HyperText Markup Language (HTML) and JAVASCRIPT®. The JAVASCRIPT® may include client-side executable code, server-side executable code, or both. The server device may transmit or otherwise provide this representation to a client device for the client device to display on a screen according to its locally-defined look and feel. Alternatively, a representation of a GUI may take other forms, such as an intermediate form (e.g., JAVA® byte-code) that a client device can use to directly generate graphical output therefrom. Other possibilities exist.

Further, user interaction with GUI elements, such as buttons, menus, tabs, sliders, checkboxes, toggles, etc. may be referred to as “selection”, “activation”, or “actuation” thereof. These terms may be used regardless of whether the GUI elements are interacted with by way of keyboard, pointing device, touchscreen, or another mechanism.

An aPaaS architecture is particularly powerful when integrated with an enterprise's network and used to manage such a network. The following embodiments describe architectural and functional aspects of example aPaaS systems, as well as the features and advantages thereof.

II. Example Computing Devices and Cloud-Based Computing Environments

FIG. 1 is a simplified block diagram exemplifying a computing device 100, illustrating some of the components that could be included in a computing device arranged to operate in accordance with the embodiments herein. Computing device 100 could be a client device (e.g., a device actively operated by a user), a server device (e.g., a device that provides computational services to client devices), or some other type of computational platform. Some server devices may operate as client devices from time to time in order to perform particular operations, and some client devices may incorporate server features.

In this example, computing device 100 includes processor 102, memory 104, network interface 106, and input/output unit 108, all of which may be coupled by system bus 110 or a similar mechanism. In some embodiments, computing device 100 may include other components and/or peripheral devices (e.g., detachable storage, printers, and so on).

Processor 102 may be one or more of any type of computer processing element, such as a central processing unit (CPU), a co-processor (e.g., a mathematics, graphics, or encryption co-processor), a digital signal processor (DSP), a network processor, and/or a form of integrated circuit or controller that performs processor operations. In some cases, processor 102 may be one or more single-core processors. In other cases, processor 102 may be one or more multi-core processors with multiple independent processing units. Processor 102 may also include register memory for temporarily storing instructions being executed and related data, as well as cache memory for temporarily storing recently-used instructions and data.

Memory 104 may be any form of computer-usable memory, including but not limited to random access memory (RAM), read-only memory (ROM), and non-volatile memory (e.g., flash memory, hard disk drives, solid state drives, compact discs (CDs), digital video discs (DVDs), and/or tape storage). Thus, memory 104 represents both main memory units, as well as long-term storage. Other types of memory may include biological memory.

Memory 104 may store program instructions and/or data on which program instructions may operate. By way of example, memory 104 may store these program instructions on a non-transitory, computer-readable medium, such that the instructions are executable by processor 102 to carry out any of the methods, processes, or operations disclosed in this specification or the accompanying drawings.

As shown in FIG. 1 , memory 104 may include firmware 104A, kernel 104B, and/or applications 104C. Firmware 104A may be program code used to boot or otherwise initiate some or all of computing device 100. Kernel 104B may be an operating system, including modules for memory management, scheduling and management of processes, input/output, and communication. Kernel 104B may also include device drivers that allow the operating system to communicate with the hardware modules (e.g., memory units, networking interfaces, ports, and buses) of computing device 100. Applications 104C may be one or more user-space software programs, such as web browsers or email clients, as well as any software libraries used by these programs. Memory 104 may also store data used by these and other programs and applications.

Network interface 106 may take the form of one or more wireline interfaces, such as Ethernet (e.g., Fast Ethernet, Gigabit Ethernet, and so on). Network interface 106 may also support communication over one or more non-Ethernet media, such as coaxial cables or power lines, or over wide-area media, such as Synchronous Optical Networking (SONET) or digital subscriber line (DSL) technologies. Network interface 106 may additionally take the form of one or more wireless interfaces, such as IEEE 802.11 (Wifi), BLUETOOTH®, global positioning system (GPS), or a wide-area wireless interface. However, other forms of physical layer interfaces and other types of standard or proprietary communication protocols may be used over network interface 106. Furthermore, network interface 106 may comprise multiple physical interfaces. For instance, some embodiments of computing device 100 may include Ethernet, BLUETOOTH®, and Wifi interfaces.

Input/output unit 108 may facilitate user and peripheral device interaction with computing device 100. Input/output unit 108 may include one or more types of input devices, such as a keyboard, a mouse, a touch screen, and so on. Similarly, input/output unit 108 may include one or more types of output devices, such as a screen, monitor, printer, and/or one or more light emitting diodes (LEDs). Additionally or alternatively, computing device 100 may communicate with other devices using a universal serial bus (USB) or high-definition multimedia interface (HDMI) port interface, for example.

In some embodiments, one or more computing devices like computing device 100 may be deployed to support an aPaaS architecture. The exact physical location, connectivity, and configuration of these computing devices may be unknown and/or unimportant to client devices. Accordingly, the computing devices may be referred to as “cloud-based” devices that may be housed at various remote data center locations.

FIG. 2 depicts a cloud-based server cluster 200 in accordance with example embodiments. In FIG. 2 , operations of a computing device (e.g., computing device 100) may be distributed between server devices 202, data storage 204, and routers 206, all of which may be connected by local cluster network 208. The number of server devices 202, data storages 204, and routers 206 in server cluster 200 may depend on the computing task(s) and/or applications assigned to server cluster 200.

For example, server devices 202 can be configured to perform various computing tasks of computing device 100. Thus, computing tasks can be distributed among one or more of server devices 202. To the extent that these computing tasks can be performed in parallel, such a distribution of tasks may reduce the total time to complete these tasks and return a result. For purposes of simplicity, both server cluster 200 and individual server devices 202 may be referred to as a “server device.” This nomenclature should be understood to imply that one or more distinct server devices, data storage devices, and cluster routers may be involved in server device operations.

Data storage 204 may be data storage arrays that include drive array controllers configured to manage read and write access to groups of hard disk drives and/or solid state drives. The drive array controllers, alone or in conjunction with server devices 202, may also be configured to manage backup or redundant copies of the data stored in data storage 204 to protect against drive failures or other types of failures that prevent one or more of server devices 202 from accessing units of data storage 204. Other types of memory aside from drives may be used.

Routers 206 may include networking equipment configured to provide internal and external communications for server cluster 200. For example, routers 206 may include one or more packet-switching and/or routing devices (including switches and/or gateways) configured to provide (i) network communications between server devices 202 and data storage 204 via local cluster network 208, and/or (ii) network communications between server cluster 200 and other devices via communication link 210 to network 212.

Additionally, the configuration of routers 206 can be based at least in part on the data communication requirements of server devices 202 and data storage 204, the latency and throughput of the local cluster network 208, the latency, throughput, and cost of communication link 210, and/or other factors that may contribute to the cost, speed, fault-tolerance, resiliency, efficiency, and/or other design goals of the system architecture.

As a possible example, data storage 204 may include any form of database, such as a structured query language (SQL) database. Various types of data structures may store the information in such a database, including but not limited to tables, arrays, lists, trees, and tuples. Furthermore, any databases in data storage 204 may be monolithic or distributed across multiple physical devices.

Server devices 202 may be configured to transmit data to and receive data from data storage 204. This transmission and retrieval may take the form of SQL queries or other types of database queries, and the output of such queries, respectively. Additional text, images, video, and/or audio may be included as well. Furthermore, server devices 202 may organize the received data into web page or web application representations. Such a representation may take the form of a markup language, such as HTML, the eXtensible Markup Language (XML), or some other standardized or proprietary format. Moreover, server devices 202 may have the capability of executing various types of computerized scripting languages, such as but not limited to Perl, Python, PHP Hypertext Preprocessor (PHP), Active Server Pages (ASP), JAVASCRIPT®, and so on. Computer program code written in these languages may facilitate the providing of web pages to client devices, as well as client device interaction with the web pages. Alternatively or additionally, JAVA® may be used to facilitate generation of web pages and/or to provide web application functionality.

III. Example Remote Network Management Architecture

FIG. 3 depicts a remote network management architecture, in accordance with example embodiments. This architecture includes three main components — managed network 300, remote network management platform 320, and public cloud networks 340 — all connected by way of Internet 350.

A. Managed Networks

Managed network 300 may be, for example, an enterprise network used by an entity for computing and communications tasks, as well as storage of data. Thus, managed network 300 may include client devices 302, server devices 304, routers 306, virtual machines 308, firewall 310, and/or proxy servers 312. Client devices 302 may be embodied by computing device 100, server devices 304 may be embodied by computing device 100 or server cluster 200, and routers 306 may be any type of router, switch, or gateway.

Virtual machines 308 may be embodied by one or more of computing device 100 or server cluster 200. In general, a virtual machine is an emulation of a computing system, and mimics the functionality (e.g., processor, memory, and communication resources) of a physical computer. One physical computing system, such as server cluster 200, may support up to thousands of individual virtual machines. In some embodiments, virtual machines 308 may be managed by a centralized server device or application that facilitates allocation of physical computing resources to individual virtual machines, as well as performance and error reporting. Enterprises often employ virtual machines in order to allocate computing resources in an efficient, as needed fashion. Providers of virtualized computing systems include VMWARE® and MICROSOFT®.

Firewall 310 may be one or more specialized routers or server devices that protect managed network 300 from unauthorized attempts to access the devices, applications, and services therein, while allowing authorized communication that is initiated from managed network 300. Firewall 310 may also provide intrusion detection, web filtering, virus scanning, application-layer gateways, and other applications or services. In some embodiments not shown in FIG. 3 , managed network 300 may include one or more virtual private network (VPN) gateways with which it communicates with remote network management platform 320 (see below).

Managed network 300 may also include one or more proxy servers 312. An embodiment of proxy servers 312 may be a server application that facilitates communication and movement of data between managed network 300, remote network management platform 320, and public cloud networks 340. In particular, proxy servers 312 may be able to establish and maintain secure communication sessions with one or more computational instances of remote network management platform 320. By way of such a session, remote network management platform 320 may be able to discover and manage aspects of the architecture and configuration of managed network 300 and its components.

Possibly with the assistance of proxy servers 312, remote network management platform 320 may also be able to discover and manage aspects of public cloud networks 340 that are used by managed network 300. While not shown in FIG. 3 , one or more proxy servers 312 may be placed in any of public cloud networks 340 in order to facilitate this discovery and management.

Firewalls, such as firewall 310, typically deny all communication sessions that are incoming by way of Internet 350, unless such a session was ultimately initiated from behind the firewall (i.e., from a device on managed network 300) or the firewall has been explicitly configured to support the session. By placing proxy servers 312 behind firewall 310 (e.g., within managed network 300 and protected by firewall 310), proxy servers 312 may be able to initiate these communication sessions through firewall 310. Thus, firewall 310 might not have to be specifically configured to support incoming sessions from remote network management platform 320, thereby avoiding potential security risks to managed network 300.

In some cases, managed network 300 may consist of a few devices and a small number of networks. In other deployments, managed network 300 may span multiple physical locations and include hundreds of networks and hundreds of thousands of devices. Thus, the architecture depicted in FIG. 3 is capable of scaling up or down by orders of magnitude.

Furthermore, depending on the size, architecture, and connectivity of managed network 300, a varying number of proxy servers 312 may be deployed therein. For example, each one of proxy servers 312 may be responsible for communicating with remote network management platform 320 regarding a portion of managed network 300. Alternatively or additionally, sets of two or more proxy servers may be assigned to such a portion of managed network 300 for purposes of load balancing, redundancy, and/or high availability.

B. Remote Network Management Platforms

Remote network management platform 320 is a hosted environment that provides aPaaS services to users, particularly to the operator of managed network 300. These services may take the form of web-based portals, for example, using the aforementioned web-based technologies. Thus, a user can securely access remote network management platform 320 from, for example, client devices 302, or potentially from a client device outside of managed network 300. By way of the web-based portals, users may design, test, and deploy applications, generate reports, view analytics, and perform other tasks. Remote network management platform 320 may also be referred to as a multi-application platform.

As shown in FIG. 3 , remote network management platform 320 includes four computational instances 322, 324, 326, and 328. Each of these computational instances may represent one or more server nodes operating dedicated copies of the aPaaS software and/or one or more database nodes. The arrangement of server and database nodes on physical server devices and/or virtual machines can be flexible and may vary based on enterprise needs. In combination, these nodes may provide a set of web portals, services, and applications (e.g., a wholly-functioning aPaaS system) available to a particular enterprise. In some cases, a single enterprise may use multiple computational instances.

For example, managed network 300 may be an enterprise customer of remote network management platform 320, and may use computational instances 322, 324, and 326. The reason for providing multiple computational instances to one customer is that the customer may wish to independently develop, test, and deploy its applications and services. Thus, computational instance 322 may be dedicated to application development related to managed network 300, computational instance 324 may be dedicated to testing these applications, and computational instance 326 may be dedicated to the live operation of tested applications and services. A computational instance may also be referred to as a hosted instance, a remote instance, a customer instance, or by some other designation. Any application deployed onto a computational instance may be a scoped application, in that its access to databases within the computational instance can be restricted to certain elements therein (e.g., one or more particular database tables or particular rows within one or more database tables).

For purposes of clarity, the disclosure herein refers to the arrangement of application nodes, database nodes, aPaaS software executing thereon, and underlying hardware as a “computational instance.” Note that users may colloquially refer to the graphical user interfaces provided thereby as “instances.” But unless it is defined otherwise herein, a “computational instance” is a computing system disposed within remote network management platform 320.

The multi-instance architecture of remote network management platform 320 is in contrast to conventional multi-tenant architectures, over which multi-instance architectures exhibit several advantages. In multi-tenant architectures, data from different customers (e.g., enterprises) are comingled in a single database. While these customers' data are separate from one another, the separation is enforced by the software that operates the single database. As a consequence, a security breach in this system may affect all customers' data, creating additional risk, especially for entities subject to governmental, healthcare, and/or financial regulation. Furthermore, any database operations that affect one customer will likely affect all customers sharing that database. Thus, if there is an outage due to hardware or software errors, this outage affects all such customers. Likewise, if the database is to be upgraded to meet the needs of one customer, it will be unavailable to all customers during the upgrade process. Often, such maintenance windows will be long, due to the size of the shared database.

In contrast, the multi-instance architecture provides each customer with its own database in a dedicated computing instance. This prevents comingling of customer data, and allows each instance to be independently managed. For example, when one customer's instance experiences an outage due to errors or an upgrade, other computational instances are not impacted. Maintenance down time is limited because the database only contains one customer's data. Further, the simpler design of the multi-instance architecture allows redundant copies of each customer database and instance to be deployed in a geographically diverse fashion. This facilitates high availability, where the live version of the customer's instance can be moved when faults are detected or maintenance is being performed.

In some embodiments, remote network management platform 320 may include one or more central instances, controlled by the entity that operates this platform. Like a computational instance, a central instance may include some number of application and database nodes disposed upon some number of physical server devices or virtual machines. Such a central instance may serve as a repository for specific configurations of computational instances as well as data that can be shared amongst at least some of the computational instances. For instance, definitions of common security threats that could occur on the computational instances, software packages that are commonly discovered on the computational instances, and/or an application store for applications that can be deployed to the computational instances may reside in a central instance. Computational instances may communicate with central instances by way of well-defined interfaces in order to obtain this data.

In order to support multiple computational instances in an efficient fashion, remote network management platform 320 may implement a plurality of these instances on a single hardware platform. For example, when the aPaaS system is implemented on a server cluster such as server cluster 200, it may operate virtual machines that dedicate varying amounts of computational, storage, and communication resources to instances. But full virtualization of server cluster 200 might not be necessary, and other mechanisms may be used to separate instances. In some examples, each instance may have a dedicated account and one or more dedicated databases on server cluster 200. Alternatively, a computational instance such as computational instance 322 may span multiple physical devices.

In some cases, a single server cluster of remote network management platform 320 may support multiple independent enterprises. Furthermore, as described below, remote network management platform 320 may include multiple server clusters deployed in geographically diverse data centers in order to facilitate load balancing, redundancy, and/or high availability.

C. Public Cloud Networks

Public cloud networks 340 may be remote server devices (e.g., a plurality of server clusters such as server cluster 200) that can be used for outsourced computation, data storage, communication, and service hosting operations. These servers may be virtualized (i.e., the servers may be virtual machines). Examples of public cloud networks 340 may include AMAZON WEB SERVICES® and MICROSOFT® AZURE®. Like remote network management platform 320, multiple server clusters supporting public cloud networks 340 may be deployed at geographically diverse locations for purposes of load balancing, redundancy, and/or high availability.

Managed network 300 may use one or more of public cloud networks 340 to deploy applications and services to its clients and customers. For instance, if managed network 300 provides online music streaming services, public cloud networks 340 may store the music files and provide web interface and streaming capabilities. In this way, the enterprise of managed network 300 does not have to build and maintain its own servers for these operations.

Remote network management platform 320 may include modules that integrate with public cloud networks 340 to expose virtual machines and managed services therein to managed network 300. The modules may allow users to request virtual resources, discover allocated resources, and provide flexible reporting for public cloud networks 340. In order to establish this functionality, a user from managed network 300 might first establish an account with public cloud networks 340, and request a set of associated resources. Then, the user may enter the account information into the appropriate modules of remote network management platform 320. These modules may then automatically discover the manageable resources in the account, and also provide reports related to usage, performance, and billing.

D. Communication Support and Other Operations

Internet 350 may represent a portion of the global Internet. However, Internet 350 may alternatively represent a different type of network, such as a private wide-area or local-area packet-switched network.

FIG. 4 further illustrates the communication environment between managed network 300 and computational instance 322, and introduces additional features and alternative embodiments. In FIG. 4 , computational instance 322 is replicated, in whole or in part, across data centers 400A and 400B. These data centers may be geographically distant from one another, perhaps in different cities or different countries. Each data center includes support equipment that facilitates communication with managed network 300, as well as remote users.

In data center 400A, network traffic to and from external devices flows either through VPN gateway 402A or firewall 404A. VPN gateway 402A may be peered with VPN gateway 412 of managed network 300 by way of a security protocol such as Internet Protocol Security (IPSEC) or Transport Layer Security (TLS). Firewall 404A may be configured to allow access from authorized users, such as user 414 and remote user 416, and to deny access to unauthorized users. By way of firewall 404A, these users may access computational instance 322, and possibly other computational instances. Load balancer 406A may be used to distribute traffic amongst one or more physical or virtual server devices that host computational instance 322. Load balancer 406A may simplify user access by hiding the internal configuration of data center 400A, (e.g., computational instance 322) from client devices. For instance, if computational instance 322 includes multiple physical or virtual computing devices that share access to multiple databases, load balancer 406A may distribute network traffic and processing tasks across these computing devices and databases so that no one computing device or database is significantly busier than the others. In some embodiments, computational instance 322 may include VPN gateway 402A, firewall 404A, and load balancer 406A.

Data center 400B may include its own versions of the components in data center 400A. Thus, VPN gateway 402B, firewall 404B, and load balancer 406B may perform the same or similar operations as VPN gateway 402A, firewall 404A, and load balancer 406A, respectively. Further, by way of real-time or near-real-time database replication and/or other operations, computational instance 322 may exist simultaneously in data centers 400A and 400B.

Data centers 400A and 400B as shown in FIG. 4 may facilitate redundancy and high availability. In the configuration of FIG. 4 , data center 400A is active and data center 400B is passive. Thus, data center 400A is serving all traffic to and from managed network 300, while the version of computational instance 322 in data center 400B is being updated in near-real-time. Other configurations, such as one in which both data centers are active, may be supported.

Should data center 400A fail in some fashion or otherwise become unavailable to users, data center 400B can take over as the active data center. For example, domain name system (DNS) servers that associate a domain name of computational instance 322 with one or more Internet Protocol (IP) addresses of data center 400A may re-associate the domain name with one or more IP addresses of data center 400B. After this re-association completes (which may take less than one second or several seconds), users may access computational instance 322 by way of data center 400B.

FIG. 4 also illustrates a possible configuration of managed network 300. As noted above, proxy servers 312 and user 414 may access computational instance 322 through firewall 310. Proxy servers 312 may also access configuration items 410. In FIG. 4 , configuration items 410 may refer to any or all of client devices 302, server devices 304, routers 306, and virtual machines 308, any components thereof, any applications or services executing thereon, as well as relationships between devices, components, applications, and services. Thus, the term “configuration items” may be shorthand for part of all of any physical or virtual device, or any application or service remotely discoverable or managed by computational instance 322, or relationships between discovered devices, applications, and services. Configuration items may be represented in a configuration management database (CMDB) of computational instance 322.

As stored or transmitted, a configuration item may be a list of attributes that characterize the hardware or software that the configuration item represents. These attributes may include manufacturer, vendor, location, owner, unique identifier, description, network address, operational status, serial number, time of last update, and so on. The class of a configuration item may determine which subset of attributes are present for the configuration item (e.g., software and hardware configuration items may have different lists of attributes).

As noted above, VPN gateway 412 may provide a dedicated VPN to VPN gateway 402A. Such a VPN may be helpful when there is a significant amount of traffic between managed network 300 and computational instance 322, or security policies otherwise suggest or require use of a VPN between these sites. In some embodiments, any device in managed network 300 and/or computational instance 322 that directly communicates via the VPN is assigned a public IP address. Other devices in managed network 300 and/or computational instance 322 may be assigned private IP addresses (e.g., IP addresses selected from the 10.0.0.0-10.255.255.255 or 192.168.0.0-192.168.255.255 ranges, represented in shorthand as subnets 10.0.0.0/8 and 192.168.0.0/16, respectively). In various alternatives, devices in managed network 300, such as proxy servers 312, may use a secure protocol (e.g., TLS) to communicate directly with one or more data centers.

IV. Example Discovery

In order for remote network management platform 320 to administer the devices, applications, and services of managed network 300, remote network management platform 320 may first determine what devices are present in managed network 300, the configurations, constituent components, and operational statuses of these devices, and the applications and services provided by the devices. Remote network management platform 320 may also determine the relationships between discovered devices, their components, applications, and services. Representations of each device, component, application, and service may be referred to as a configuration item. The process of determining the configuration items and relationships within managed network 300 is referred to as discovery, and may be facilitated at least in part by proxy servers 312. Representations of configuration items and relationships are stored in a CMDB.

While this section describes discovery conducted on managed network 300, the same or similar discovery procedures may be used on public cloud networks 340. Thus, in some environments, “discovery” may refer to discovering configuration items and relationships on a managed network and/or one or more public cloud networks.

For purposes of the embodiments herein, an “application” may refer to one or more processes, threads, programs, client software modules, server software modules, or any other software that executes on a device or group of devices. A “service” may refer to a high-level capability provided by one or more applications executing on one or more devices working in conjunction with one another. For example, a web service may involve multiple web application server threads executing on one device and accessing information from a database application that executes on another device.

FIG. 5 provides a logical depiction of how configuration items and relationships can be discovered, as well as how information related thereto can be stored. For sake of simplicity, remote network management platform 320, public cloud networks 340, and Internet 350 are not shown.

In FIG. 5 , CMDB 500, task list 502, and identification and reconciliation engine (IRE) 514 are disposed and/or operate within computational instance 322. Task list 502 represents a connection point between computational instance 322 and proxy servers 312. Task list 502 may be referred to as a queue, or more particularly as an external communication channel (ECC) queue. Task list 502 may represent not only the queue itself but any associated processing, such as adding, removing, and/or manipulating information in the queue.

As discovery takes place, computational instance 322 may store discovery tasks (jobs) that proxy servers 312 are to perform in task list 502, until proxy servers 312 request these tasks in batches of one or more. Placing the tasks in task list 502 may trigger or otherwise cause proxy servers 312 to begin their discovery operations. For example, proxy servers 312 may poll task list 502 periodically or from time to time, or may be notified of discovery commands in task list 502 in some other fashion. Alternatively or additionally, discovery may be manually triggered or automatically triggered based on triggering events (e.g., discovery may automatically begin once per day at a particular time).

Regardless, computational instance 322 may transmit these discovery commands to proxy servers 312 upon request. For example, proxy servers 312 may repeatedly query task list 502, obtain the next task therein, and perform this task until task list 502 is empty or another stopping condition has been reached. In response to receiving a discovery command, proxy servers 312 may query various devices, components, applications, and/or services in managed network 300 (represented for sake of simplicity in FIG. 5 by devices 504, 506, 508, 510, and 512). These devices, components, applications, and/or services may provide responses relating to their configuration, operation, and/or status to proxy servers 312. In turn, proxy servers 312 may then provide this discovered information to task list 502 (i.e., task list 502 may have an outgoing queue for holding discovery commands until requested by proxy servers 312 as well as an incoming queue for holding the discovery information until it is read).

IRE 514 may be a software module that removes discovery information from task list 502 and formulates this discovery information into configuration items (e.g., representing devices, components, applications, and/or services discovered on managed network 300) as well as relationships therebetween. Then, IRE 514 may provide these configuration items and relationships to CMDB 500 for storage therein. The operation of IRE 514 is described in more detail below.

In this fashion, configuration items stored in CMDB 500 represent the environment of managed network 300. As an example, these configuration items may represent a set of physical and/or virtual devices (e.g., client devices, server devices, routers, or virtual machines), applications executing thereon (e.g., web servers, email servers, databases, or storage arrays), as well as services that involve multiple individual configuration items. Relationships may be pairwise definitions of arrangements or dependencies between configuration items.

In order for discovery to take place in the manner described above, proxy servers 312, CMDB 500, and/or one or more credential stores may be configured with credentials for the devices to be discovered. Credentials may include any type of information needed in order to access the devices. These may include userid/password pairs, certificates, and so on. In some embodiments, these credentials may be stored in encrypted fields of CMDB 500. Proxy servers 312 may contain the decryption key for the credentials so that proxy servers 312 can use these credentials to log on to or otherwise access devices being discovered.

There are two general types of discovery—horizontal and vertical (top-down). Each are discussed below.

A. Horizontal Discovery

Horizontal discovery is used to scan managed network 300, find devices, components, and/or applications, and then populate CMDB 500 with configuration items representing these devices, components, and/or applications. Horizontal discovery also creates relationships between the configuration items. For instance, this could be a “runs on” relationship between a configuration item representing a software application and a configuration item representing a server device on which it executes. Typically, horizontal discovery is not aware of services and does not create relationships between configuration items based on the services in which they operate.

There are two versions of horizontal discovery. One relies on probes and sensors, while the other also employs patterns. Probes and sensors may be scripts (e.g., written in JAVASCRIPT®) that collect and process discovery information on a device and then update CMDB 500 accordingly. More specifically, probes explore or investigate devices on managed network 300, and sensors parse the discovery information returned from the probes.

Patterns are also scripts that collect data on one or more devices, process it, and update the CMDB. Patterns differ from probes and sensors in that they are written in a specific discovery programming language and are used to conduct detailed discovery procedures on specific devices, components, and/or applications that often cannot be reliably discovered (or discovered at all) by more general probes and sensors. Particularly, patterns may specify a series of operations that define how to discover a particular arrangement of devices, components, and/or applications, what credentials to use, and which CMDB tables to populate with configuration items resulting from this discovery.

Both versions may proceed in four logical phases: scanning, classification, identification, and exploration. Also, both versions may require specification of one or more ranges of IP addresses on managed network 300 for which discovery is to take place. Each phase may involve communication between devices on managed network 300 and proxy servers 312, as well as between proxy servers 312 and task list 502. Some phases may involve storing partial or preliminary configuration items in CMDB 500, which may be updated in a later phase.

In the scanning phase, proxy servers 312 may probe each IP address in the specified range(s) of IP addresses for open Transmission Control Protocol (TCP) and/or User Datagram Protocol (UDP) ports to determine the general type of device and its operating system. The presence of such open ports at an IP address may indicate that a particular application is operating on the device that is assigned the IP address, which in turn may identify the operating system used by the device. For example, if TCP port 135 is open, then the device is likely executing a WINDOWS® operating system. Similarly, if TCP port 22 is open, then the device is likely executing a UNIX® operating system, such as LINUX®. If UDP port 161 is open, then the device may be able to be further identified through the Simple Network Management Protocol (SNMP). Other possibilities exist.

In the classification phase, proxy servers 312 may further probe each discovered device to determine the type of its operating system. The probes used for a particular device are based on information gathered about the devices during the scanning phase. For example, if a device is found with TCP port 22 open, a set of UNIX®-specific probes may be used. Likewise, if a device is found with TCP port 135 open, a set of WINDOWS®-specific probes may be used. For either case, an appropriate set of tasks may be placed in task list 502 for proxy servers 312 to carry out. These tasks may result in proxy servers 312 logging on, or otherwise accessing information from the particular device. For instance, if TCP port 22 is open, proxy servers 312 may be instructed to initiate a Secure Shell (SSH) connection to the particular device and obtain information about the specific type of operating system thereon from particular locations in the file system. Based on this information, the operating system may be determined. As an example, a UNIX® device with TCP port 22 open may be classified as AIX®, HPUX, LINUX®, MACOS®, or SOLARIS®. This classification information may be stored as one or more configuration items in CMDB 500.

In the identification phase, proxy servers 312 may determine specific details about a classified device. The probes used during this phase may be based on information gathered about the particular devices during the classification phase. For example, if a device was classified as LINUX®, a set of LINUX®-specific probes may be used. Likewise, if a device was classified as WINDOWS® 10, as a set of WINDOWS®-10-specific probes may be used. As was the case for the classification phase, an appropriate set of tasks may be placed in task list 502 for proxy servers 312 to carry out. These tasks may result in proxy servers 312 reading information from the particular device, such as basic input/output system (BIOS) information, serial numbers, network interface information, media access control address(es) assigned to these network interface(s), IP address(es) used by the particular device and so on. This identification information may be stored as one or more configuration items in CMDB 500 along with any relevant relationships therebetween. Doing so may involve passing the identification information through IRE 514 to avoid generation of duplicate configuration items, for purposes of disambiguation, and/or to determine the table(s) of CMDB 500 in which the discovery information should be written.

In the exploration phase, proxy servers 312 may determine further details about the operational state of a classified device. The probes used during this phase may be based on information gathered about the particular devices during the classification phase and/or the identification phase. Again, an appropriate set of tasks may be placed in task list 502 for proxy servers 312 to carry out. These tasks may result in proxy servers 312 reading additional information from the particular device, such as processor information, memory information, lists of running processes (software applications), and so on. Once more, the discovered information may be stored as one or more configuration items in CMDB 500, as well as relationships.

Running horizontal discovery on certain devices, such as switches and routers, may utilize SNMP. Instead of or in addition to determining a list of running processes or other application-related information, discovery may determine additional subnets known to a router and the operational state of the router's network interfaces (e.g., active, inactive, queue length, number of packets dropped, etc.). The IP addresses of the additional subnets may be candidates for further discovery procedures. Thus, horizontal discovery may progress iteratively or recursively.

Patterns are used only during the identification and exploration phases—under pattern-based discovery, the scanning and classification phases operate as they would if probes and sensors are used. After the classification stage completes, a pattern probe is specified as a probe to use during identification. Then, the pattern probe and the pattern that it specifies are launched.

Patterns support a number of features, by way of the discovery programming language, that are not available or difficult to achieve with discovery using probes and sensors. For example, discovery of devices, components, and/or applications in public cloud networks, as well as configuration file tracking, is much simpler to achieve using pattern-based discovery. Further, these patterns are more easily customized by users than probes and sensors. Additionally, patterns are more focused on specific devices, components, and/or applications and therefore may execute faster than the more general approaches used by probes and sensors.

Once horizontal discovery completes, a configuration item representation of each discovered device, component, and/or application is available in CMDB 500. For example, after discovery, operating system version, hardware configuration, and network configuration details for client devices, server devices, and routers in managed network 300, as well as applications executing thereon, may be stored as configuration items. This collected information may be presented to a user in various ways to allow the user to view the hardware composition and operational status of devices.

Furthermore, CMDB 500 may include entries regarding the relationships between configuration items. More specifically, suppose that a server device includes a number of hardware components (e.g., processors, memory, network interfaces, storage, and file systems), and has several software applications installed or executing thereon. Relationships between the components and the server device (e.g., “contained by” relationships) and relationships between the software applications and the server device (e.g., “runs on” relationships) may be represented as such in CMDB 500.

More generally, the relationship between a software configuration item installed or executing on a hardware configuration item may take various forms, such as “is hosted on”, “runs on”, or “depends on”. Thus, a database application installed on a server device may have the relationship “is hosted on” with the server device to indicate that the database application is hosted on the server device. In some embodiments, the server device may have a reciprocal relationship of “used by” with the database application to indicate that the server device is used by the database application. These relationships may be automatically found using the discovery procedures described above, though it is possible to manually set relationships as well.

In this manner, remote network management platform 320 may discover and inventory the hardware and software deployed on and provided by managed network 300.

B. Vertical Discovery

Vertical discovery is a technique used to find and map configuration items that are part of an overall service, such as a web service. For example, vertical discovery can map a web service by showing the relationships between a web server application, a LINUX® server device, and a database that stores the data for the web service. Typically, horizontal discovery is run first to find configuration items and basic relationships therebetween, and then vertical discovery is run to establish the relationships between configuration items that make up a service.

Patterns can be used to discover certain types of services, as these patterns can be programmed to look for specific arrangements of hardware and software that fit a description of how the service is deployed. Alternatively or additionally, traffic analysis (e.g., examining network traffic between devices) can be used to facilitate vertical discovery. In some cases, the parameters of a service can be manually configured to assist vertical discovery.

In general, vertical discovery seeks to find specific types of relationships between devices, components, and/or applications. Some of these relationships may be inferred from configuration files. For example, the configuration file of a web server application can refer to the IP address and port number of a database on which it relies. Vertical discovery patterns can be programmed to look for such references and infer relationships therefrom. Relationships can also be inferred from traffic between devices—for instance, if there is a large extent of web traffic (e.g., TCP port 80 or 8080) traveling between a load balancer and a device hosting a web server, then the load balancer and the web server may have a relationship.

Relationships found by vertical discovery may take various forms. As an example, an email service may include an email server software configuration item and a database application software configuration item, each installed on different hardware device configuration items. The email service may have a “depends on” relationship with both of these software configuration items, while the software configuration items have a “used by” reciprocal relationship with the email service. Such services might not be able to be fully determined by horizontal discovery procedures, and instead may rely on vertical discovery and possibly some extent of manual configuration.

C. Advantages of Discovery

Regardless of how discovery information is obtained, it can be valuable for the operation of a managed network. Notably, IT personnel can quickly determine where certain software applications are deployed, and what configuration items make up a service. This allows for rapid pinpointing of root causes of service outages or degradation. For example, if two different services are suffering from slow response times, the CMDB can be queried (perhaps among other activities) to determine that the root cause is a database application that is used by both services having high processor utilization. Thus, IT personnel can address the database application rather than waste time considering the health and performance of other configuration items that make up the services.

In another example, suppose that a database application is executing on a server device, and that this database application is used by an employee onboarding service as well as a payroll service. Thus, if the server device is taken out of operation for maintenance, it is clear that the employee onboarding service and payroll service will be impacted. Likewise, the dependencies and relationships between configuration items may be able to represent the services impacted when a particular hardware device fails.

In general, configuration items and/or relationships between configuration items may be displayed on a web-based interface and represented in a hierarchical fashion. Modifications to such configuration items and/or relationships in the CMDB may be accomplished by way of this interface.

Furthermore, users from managed network 300 may develop workflows that allow certain coordinated activities to take place across multiple discovered devices. For instance, an IT workflow might allow the user to change the common administrator password to all discovered LINUX® devices in a single operation.

V. CMDB Identification Rules and Reconciliation

A CMDB, such as CMDB 500, provides a repository of configuration items and relationships. When properly provisioned, it can take on a key role in higher-layer applications deployed within or involving a computational instance. These applications may relate to enterprise IT service management, operations management, asset management, configuration management, compliance, and so on.

For example, an IT service management application may use information in the CMDB to determine applications and services that may be impacted by a component (e.g., a server device) that has malfunctioned, crashed, or is heavily loaded. Likewise, an asset management application may use information in the CMDB to determine which hardware and/or software components are being used to support particular enterprise applications. As a consequence of the importance of the CMDB, it is desirable for the information stored therein to be accurate, consistent, and up to date.

A CMDB may be populated in various ways. As discussed above, a discovery procedure may automatically store information including configuration items and relationships in the CMDB. However, a CMDB can also be populated, as a whole or in part, by manual entry, configuration files, and third-party data sources. Given that multiple data sources may be able to update the CMDB at any time, it is possible that one data source may overwrite entries of another data source. Also, two data sources may each create slightly different entries for the same configuration item, resulting in a CMDB containing duplicate data. When either of these occurrences takes place, they can cause the health and utility of the CMDB to be reduced.

In order to mitigate this situation, these data sources might not write configuration items directly to the CMDB. Instead, they may write to an identification and reconciliation application programming interface (API) of IRE 514. Then, IRE 514 may use a set of configurable identification rules to uniquely identify configuration items and determine whether and how they are to be written to the CMDB.

In general, an identification rule specifies a set of configuration item attributes that can be used for this unique identification. Identification rules may also have priorities so that rules with higher priorities are considered before rules with lower priorities. Additionally, a rule may be independent, in that the rule identifies configuration items independently of other configuration items. Alternatively, the rule may be dependent, in that the rule first uses a metadata rule to identify a dependent configuration item.

Metadata rules describe which other configuration items are contained within a particular configuration item, or the host on which a particular configuration item is deployed. For example, a network directory service configuration item may contain a domain controller configuration item, while a web server application configuration item may be hosted on a server device configuration item.

A goal of each identification rule is to use a combination of attributes that can unambiguously distinguish a configuration item from all other configuration items, and is expected not to change during the lifetime of the configuration item. Some possible attributes for an example server device may include serial number, location, operating system, operating system version, memory capacity, and so on. If a rule specifies attributes that do not uniquely identify the configuration item, then multiple components may be represented as the same configuration item in the CMDB. Also, if a rule specifies attributes that change for a particular configuration item, duplicate configuration items may be created.

Thus, when a data source provides information regarding a configuration item to IRE 514, IRE 514 may attempt to match the information with one or more rules. If a match is found, the configuration item is written to the CMDB or updated if it already exists within the CMDB. If a match is not found, the configuration item may be held for further analysis.

Configuration item reconciliation procedures may be used to ensure that only authoritative data sources are allowed to overwrite configuration item data in the CMDB. This reconciliation may also be rules-based. For instance, a reconciliation rule may specify that a particular data source is authoritative for a particular configuration item type and set of attributes. Then, IRE 514 might only permit this authoritative data source to write to the particular configuration item, and writes from unauthorized data sources may be prevented. Thus, the authorized data source becomes the single source of truth regarding the particular configuration item. In some cases, an unauthorized data source may be allowed to write to a configuration item if it is creating the configuration item or the attributes to which it is writing are empty.

Additionally, multiple data sources may be authoritative for the same configuration item or attributes thereof. To avoid ambiguities, these data sources may be assigned precedences that are taken into account during the writing of configuration items. For example, a secondary authorized data source may be able to write to a configuration item's attribute until a primary authorized data source writes to this attribute. Afterward, further writes to the attribute by the secondary authorized data source may be prevented.

In some cases, duplicate configuration items may be automatically detected by IRE 514 or in another fashion. These configuration items may be deleted or flagged for manual de-duplication.

VI. Robotic Process Automation

Robotic process automation (RPA) is a general term for the deployment and use of software “bots” that automate human-computer interaction and computer-computer interaction. These bots are based on a runtime framework of executable programmatic logic that take the form of any type of software, such as a compiled program, interpreted script, client-server application, and so on. Thus, bots may be referred to as robots, software bots, software programs, or applications, for example.

The tasks that bots carry out may be simple, complex, or anywhere in between. Example tasks are candidates for RPA include data entry, scanning documents for keywords or phrases, sorting data into categories, moving files from one location to another, obtaining information from or writing information to a server or database, generating analytics, troubleshooting, synchronizing data, collecting data from multiple remote sources, and so on. It is possible for bots to perform a wide variety of additional tasks as well across many functions, such as IT, HR, finance, engineering, and/or customer service, just to name a few. The programmatic logic for these tasks may be deployed in packages that are provided to bots for execution.

One of the advantages of RPA comes from its ability to automate many of the routine, error-prone, frequent, and manual tasks that humans typically perform. This saves time and resources, allowing enterprises to focus on more strategic efforts to propel high-level and/or complex initiatives forward. Such automation may be full, in that a properly configured bot can carry out its activities without human intervention or with a minimal amount of human interaction (e.g., the human may initiate the bot and then the bot performs one or more tasks autonomously). On the other hand, such automation may be partial, in that a bot performs certain subtasks of an overall task while a human performs other subtasks of the overall task.

Regardless of its form, the automation provided by packages may involve rules-based processing, fuzzy logic, machine-learning-based predictions or classification, or other types of algorithms. In some cases, bots may interact with user interfaces, such as parsing prompts and entering data into forms.

Bots can be deployed onto various types of host computing devices. Once deployed, a bot can be assigned tasks to perform on its host. Such tasks can be manually initiated, initiated based on a pre-defined schedule, or initiated based on reception of a trigger (e.g., a request received from a remote device). Deployed bots can be managed in various ways (e.g., stopped, restarted, monitored, modified, etc.). In performing tasks, a bot may communicate with one or more other computing devices that are local or remote to the bot's host computing device (e.g., on the same local network, on the same enterprise network, in a public cloud network, or in a remote network management platform). In some cases, bots may interact with other bots.

In some embodiments, bots may be implemented as fungible units of execution (e.g., one or more operating system processes or threads) that are provided with various rules, scripts, logic, instruction sets, and/or software packages that define tasks. In other words, such a bot may be initiated but idle until it is assigned a task and caused to execute the task. The bot would then execute the task and, upon completion, return its idle state. Then, the bot can be caused to execute the same task again or be assigned a different task.

FIG. 6 provides an example architecture 600 for RPA deployment. Architecture 600 includes managed network 300 (which may also be referred to as an enterprise network, a customer network, or a customer environment) and remote network management platform 320.

Managed network 300 may include zero or more instances of each of unattended bot 602, attended bot 604, design studio 606, and log collector 608. More or fewer components related to RPA may be present in managed network 300.

Unattended bot 602 may be a bot that performs autonomous tasks. Accordingly, unattended bot 602 may be installed on a host computing device that is a client device or a server device. Execution of tasks may be based on a pre-determined schedule, triggered by way of an API, or triggered by way of some other type of event. Since there is expected to be no human interaction or very minimal human interaction with these bots, the bots are often installed on virtual machines or execute as background processes. Login agent 602A may be an additional software module that allows unattended bot 602 to log into the host computing device as a particular user or with a particular set of credentials (e.g., a userid/password pair). In this fashion, unattended bot 602 can log in, start a user session, and execute on the host without requiring that a human is logged in. Nonetheless, a human may use the host at the same time as unattended bot 602, and the human might or might not be aware that unattended bot 602 is installed or executing.

Attended bot 604 may be a bot that operates in a partially autonomous fashion, and relies to some extent on human interaction and/or human cognition to carry out its tasks. Accordingly, attended bot 604 is typically installed on a host computing device that is a client device. Bot session 604A may be an additional software module that allows attended bot 604 to log into the host computing device as a particular user or with a particular set of credentials. In this fashion, attended bot 602 can execute on the host alongside the user, but with control of its own input and output (i.e., not relying on a keyboard or mouse for input).

Design studio 606 is a development environment for bots and tasks that are to be performed by bots. Thus, design studio 606 may be deployed mainly on developer machines and does not need to be installed on computing devices that host unattended or attended bots. Design studio 606 may be a low-code/no-code graphical user interface that allows designers to drag and drop representations of instructions and other functionality into software packages that define tasks.

Log collector 608 is a database or other repository that receives and stores event data from unattended bot 602, or attended bot 604, and/or design studio 606. This allows operation of bots to be tracked and debugged as needed. In some cases, log collector 608 may be on the same host computing device that a bot operates, or log collector 608 may be on a separate computing device.

Remote network management platform 320 may include package repository 610, RPA hub 612, RPA plugins 614, AMB channel 616, and/or representational state transfer (REST) API 618. It is generally assumed that these components operate on the same computational instance, but in some cases they could be spread across multiple computational instances.

Package repository 610 may store one or more packages (e.g., units of programmatic logic) that are executable by bots. Thus, each package may take the form of configuration files, rules, scripts, and/or various types of software. Package repository 610 may also include support for versioning of these packages. Packages may be developed by way of design studio 606 and pushed to package repository 610 when they are deemed ready for general use. Packages in package repository 610 may be deployed to host computing devices on managed network 300 by way of AMB channel 616. In some cases, packages may be stored in an external app store 620, and downloaded to package repository 610 on demand or by way of purchase.

RPA plugins 614 may contain building blocks that are used to create a bot. This could include, for example, library functionality that can be reused between bots. Like the packages, some of these plugins may be stored in app store 620 and downloaded to RPA plugins 614 on demand or by way of purchase. Versioning of these plugins may also be available.

RPA hub 612 may contain a set of data structures and/or metadata that coordinate the operation and management of bots. Thus, RPA hub 612 may include records for processes 612A, schedules 612B, queues 612C, bots 612D, assets 612E, and/or plugins 612F.

Processes 612A may contain records that define, for each bot deployed on managed network 300, which package that bot is to execute. Schedules 612B may contain records that define schedules usable by bots. In some embodiments, records in processes 612A may also refer to one or more of these schedules to specify when each bot is to execute its assigned package.

Queues 612C may store entries containing information that is provided from one bot to another bot, or between a bot and another module. This information could be related to tasks carried out by one or more bots, data from a document, data from a database, or other data. For example, a first bot may perform multiple transactions, create work items for these transactions, and push the work items into a queue. A second bot may remove these work items from the queue and perform further steps of the transaction.

Bots 612D may contain records that specify where and/or how bots are deployed on managed network 300. For unattended bots, bots 612D may include a one-to-one mapping between an identifier of the bot and the host computing device on which the bot is installed. For attended bots, bots 612D may include a one-to-one mapping between an identifier of the bot and the user to whom the bot is assigned. Records in bots 612D may be created when a bot is deployed to managed network 300 and may be deleted when a bot is removed from managed network 300.

Assets 612E may contain records of login credentials, environment variables, files, configuration data, or other information used by bots deployed on managed network 300.

Plugins 612F may contain records that define, for one or more bots deployed on managed network 300, which of the plugins in RPA plugins 614 that bot relies on (if any).

In some embodiments, processes 612A and bots 612D may take the form of or include references to configuration items stored in a CMDB. These configuration items may then have relationships, also stored in the CMDB, to their host computing devices and bot applications executing on these host computing devices. A benefit of modeling processes 612A and bots 612D as configuration items is that applications (also modeled as configuration items) that are being automated by way of an RPA workflow can be associated to their corresponding processes (e.g., via CMDB relationship mapping). Thus, all affected RPA automations are known if an enhancement and/or change is planned for any of those applications. This results in more effective management of RPA automation as well as avoidance of bot failures.

Asynchronous message bus (AMB) channel 616 facilitates communication between bots deployed on managed network 300 and remote network management platform 320. Thus, a bot may subscribe to one or more sets of records in RPA hub 612 and/or a tables of a CMDB. When any of these records or tables change, an indication of the change may be transmitted to the bot by way of AMB channel 616. For example, if one or more records in processes 612A change, the changes may be pushed to the appropriate bot or bots by way of AMB channel 616. In some cases, AMB channel 616 may take the form of a web sockets interface.

REST API 618 may be used by bots deployed on managed network 300 as well as design studio 606 to obtain information stored in remote network management platform 320. For example, a bot may use REST API 618 to obtain a record from RPA hub 612 (e.g., credentials, environment variables, work items) or a CMDB (e.g., configuration items).

As an example of how architecture 600 might be used, suppose that a developer associated with managed network 300 uses design studio 606 to develop a package. The developer may upload this package to package repository 610. The package may rely on one or more plugins from RPA plugins 614. Then, entries RPA hub 612 may be added or modified to associate one or more bots with the package, a schedule, assets, and/or, plugins, as well as the host computing devices on which the bots will execute. Then the bots, the package, and/or associated data from RPA hub 612 may be pushed to these host computing devices by way of AMB channel 616. If the bots require further information from remote network management platform 320 prior to or during execution, they can obtain it via REST API 618. Nonetheless, other examples of bot development, deployment, and execution may be possible.

VII. RPA Hub Database Schema

FIG. 7 provides an example database schema 700 for representing processes 612A, schedules 612B, bots 612D, and packages stored within package repository 610. Database schema 700 may be stored in a CMDB, for example, perhaps as an extension to an existing CDMB schema. Notably, database schema 700 is simplified for purposes of illustration. More complicated schemas may be used, with different table structures and different content within tables. For example, the references between tables shown in FIG. 7 may either be direct (e.g., the content of a field in a first table is a reference to a corresponding field in a second table) or indirect (e.g., the content of a field in a first table refers to a first field in an intermediary table, and content of a second field in the intermediary table refers to a field in a second table). Multiple levels of indirection may be present.

In schema 700, entries in processes table 702 may each contain an identifier (ID) and name of a unique process. These entries may also include references to a bot (defined in bots table 704), a package (defined in packages table 706), and a schedule (defined in schedules table 708). Thus, each process specifies that a particular bot is to execute a particular package in accordance with a particular schedule. In this fashion, the same bot may be assigned multiple packages and schedules, and packages and schedules may be assigned to different bots. Schema 700 may also contain a description of the process, as well as other attributes related to the process (e.g., references to environment variables, queues, etc.).

Entries in bots table 704, may each contain an identifier (ID), name, and domain of a bot (here, the domain may refer to a logical or physical separation of bots executing on a managed network, and is discussed in more detail later). The entries may also specify a host computing device on which the bot is to execute (for unattended bots), a user with whom the bot is to collaborate (for attended bots), a type, a description, and/or credentials. This host computing device or user may be referred to as an endpoint for the bot.

Entries in packages table 706 may each contain an identifier (ID), name, and domain of a package. The entries may also specify a type, a description, alert rules (e.g., when the package is to generate an alert and a target for the alert), and a version.

Entries in schedules table 708 may each contain an identifier (ID) and domain of a schedule. The entries may also specify a frequency (e.g., hourly, daily, weekly, monthly), a start date, a stop date, a start time, and a stop time. In this manner, a schedule defines start and stop dates and times for execution in accordance with the frequency.

As noted, a more involved schema with more tables may be employed (e.g., related to logging, alerting, queues, etc.), and each table could contain different fields. Further, any of the fields in these tables may refer to fields within other CMDB tables. For instance, the host device field of bots table 704 may refer to a hardware configuration item disposed within the managed network.

When a bot is deployed to the managed network, database schema 700 may be traversed (at least in part) to identify metadata related to the bot (e.g., its host computing device, users, and credentials), as well as the package that the bot is to execute and the associated schedule. The bot may be launched by a runtime on the host computing device, and then made to execute the package according to the schedule.

VIII. Additional Features

In addition to the features described so far, an architecture for RPA orchestration may also include one or more of the features described below. Each of these features provide further advantages and efficiencies

A. Domain-Based License Management

A computational instance of a remote network management platform (e.g., remote network management platform 320) may support multiple domains and enforce separation between them. For example, as shown in FIG. 8 , the entity that operates a computational instance (e.g., managed network 300) may operate as a managed service provider (MSP) to multiple MSP customers. Thus, for example, this entity may allow two other entities (e.g., MSP customers 800 and 802 respectively associated with domains abc.com and xyz.com) to both use the bot configuration of remote network management platform 320 in an outsourced manner. In these cases, domain separation allows transactions involving bots executing on these MSP customers to be per-domain for purposes of integrity and security.

Furthermore, managed network 300 may assign or otherwise distribute a certain number of licenses for particular bots to each of these MSP customers. In FIG. 8 , MSP customer 800 is allocated 2 licenses, and MSP customer 802 is allocated 5 licenses. Each license may represent an entitlement to execute a copy of a particular bot by an MSP customer. These entitlements may be enforced so that architecture 600 does not allow the deployment and/or simultaneous execution of more than 2 copies of the particular bot for MSP costumer 800 or more than 5 copies of the particular bot for MSP customer 802. The enforcement may take the form of restricting the number of entries in process table 702 that refer to specific types of bots, or the enforcement may take some other form.

In some embodiments, remote network management platform 320 may contain a total count of entitlements (e.g., 7) and associate subsets of these with each MSP's domain (e.g., 2 to abc.com and 5 to xyz.com). As noted, these entitlements may be per type of bot. Thus, these 7 entitlements may be for a first type of bot (e.g., one that converts documents between types), and another amount of entitlements may be for a second type of bot (e.g., one that identifies the semantic context of emails).

B. Flexible Credential Assignment

In some embodiments, a bot executing on a host computing device may need access to a number of different credentials to perform its tasks. For instance, the bot may need to use one set of credentials to log on to the host, another set to use a first application installed on the host, yet another set to use a second application installed on the host, and so on. Thus, in addition to being able to assign a specific credential to a bot, a set of credentials may be assigned to the bot.

FIG. 9 illustrates credential sets. Bots table 704 may include a field for credentials. Entries in this table may use this field to refer to a credential set, and such a credential set may include a list of credentials. For example, in FIG. 9 , an entry may have a credentials field that references credential set 900. Credential set 900 may include credentials that a bot can use to access host device A, app 1, and app 2. Here, it is assumed that app 1 and app 2 are applications installed on or accessible by way of host device A. Likewise, credential set 902 may include credentials that a bot can use to access host device B, app 1, and app 3, where app 1 and app 3 are applications installed on or accessible by way of host device B. As indicated by the ellipses, credential sets 900 and 902 may contain more than just three credentials.

Advantageously, this design puts all the credentials that a particular bot may need in one place. This design also allows credentials sets to be easily swapped. For instance, the entry in bots table 704 that refers to credential set 900 can be modified to refer to credential set 902 instead.

In further embodiments, credentials could be distributed in pools where bots obtain credentials as needed from a centralized repository of credentials. In these cases, multiple bots may have access to pools of multiple credentials so that more than one bot can be used to perform the same or similar tasks.

C. Local and Shared Environment Variables

Among other content, assets 612E may define one or more environment variables. These environment variables may be specify certain bot behaviors (e.g., URLs or network addresses with which to communicate, an amount of time to wait between performing sequential subtasks of an overall task, etc.). Bots may be provided with environment variables along with a software package and a schedule, and/or executing bots may dynamically retrieve environment variables by way of REST API 618.

Further, environment variables may be local to a particular process or shared amongst two or more processes. Shared environment variables are particularly useful when multiple processes use environment variables that have the same function. Rather than create multiple versions of these environment variable, the same environment variable can be reused.

D. Simplified Parallelization by way of Queues

As noted above, queues may temporarily store information that is shared between two or more bots, or between one or more bots and one or more other applications or entities. An example is shown in FIG. 10 . Particularly, producer bot 1000 provides work items to queue 1002. Queue 1002, in turn, stores this information. Consumer bots 1004A, 1004B, and 1004C read and possible remove work items from queue 1002 and perform further tasks or subtasks on these work items. In some cases, consumer bots 1004A, 1004B, and 1004C may place further work items into one or more further queues for additional consumer bots to process.

As a concrete example, producer bot 1000 may be configured to read a compressed file archive from local storage on its host computing device. The compressed file archive may contain multiple individual files. Producer bot 1000 may decompress the compressed file archive and place information from the files therein into queue 1002. Consumer bots 1004A, 1004B, and 1004C may obtain and further process this information.

Advantageously, use of queues for information sharing in this fashion allows two forms of parallelism. First, the queue allows sets of one or more producer bots and one or more consumer bots to operate simultaneously. For example, consumer bots 1004A, 1004B, and 1004C may all obtain and process work items from queue 1002 independently and in parallel. Second, the queue allows producer bots and consumer bots to operate in a pipelined fashion. For instance, consumer bot 1004B may be processing an initial work item while producer bot 1000 is simultaneously processing a subsequent work item.

IX. Example Operations

FIG. 11 is a flow chart illustrating an example embodiment. The process illustrated by FIG. 11 may be carried out by a computing device, such as computing device 100, and/or a cluster of computing devices, such as server cluster 200. However, the process can be carried out by other types of devices or device subsystems. For example, the process could be carried out by a computational instance of a remote network management platform or a portable computer, such as a laptop or a tablet device.

The embodiments of FIG. 11 may be simplified by the removal of any one or more of the features shown therein. Further, these embodiments may be combined with features, aspects, and/or implementations of any of the previous figures or otherwise described herein.

Block 1100 may involve receiving, from a computing device, a request for bot deployment, wherein the computing device includes a bot runtime, and wherein persistent storage contains definitions of (i) assignments of bots to endpoints, (ii) software packages for execution by the bots, (iii) schedules for the bots to execute the software packages, and (iv) processes that associate the bots with the software packages and the schedules.

Block 1102 may involve identifying, in the processes, a bot assigned to an endpoint that is associated with the computing device, wherein the bot is associated with a software package and a schedule.

Block 1104 may involve transmitting, to the computing device, data including a representation of the bot, a copy of the software package, and a copy of the schedule, wherein reception of the data causes the bot to execute, using the bot runtime, the software package in accordance with the schedule.

In some embodiments, the endpoint is the computing device, and the bot is an unattended bot configured to operate autonomously without human interaction.

In some embodiments, the endpoint is a user associated with the computing device, and the bot is an attended bot configured to operate semi-autonomously with human interaction.

In some embodiments, the persistent storage also includes access credentials for the computing device, wherein the bot is configured to request and receive the access credentials, and wherein the bot is also configured to use the access credentials to log on to the computing device.

In some embodiments, the access credentials are part of a credential set, wherein the credential set also contains further credentials for one or more applications, and wherein the bot is also configured to use the further credentials to access the one or more applications.

In some embodiments, the assignments of bots to endpoints are stored in database tables, wherein the processes that associate the bots with the software packages and the schedules are also stored in the database tables, and wherein the software packages are stored in a software repository that supports versioning of the software packages.

In some embodiments, an asynchronous message bus communicatively couples the bot to the persistent storage, wherein the bot is subscribed to content within one of more database tables of the persistent storage. These embodiments may further involve: detecting a change to the content of the one or more database tables; and transmitting, to the bot, a representation of the change.

In some embodiments, the persistent storage includes access credentials for the endpoints or environment variables for the bots. These embodiments may further involve: receiving, from the bot and by way of a representation state transfer (REST) interface, a request for the access credentials or the environment variables; and transmitting, to the bot and by way of the REST interface, the access credentials or the environment variables that were requested.

In some embodiments, one or more of the environment variables are shared by two or more of the bots.

In some embodiments, the endpoint is deployed on a managed network and the persistent storage is a component of a computing platform that is remote from the managed network.

In some embodiments, the persistent storage also defines maximum numbers of bots for domains in which the bots are to be deployed, wherein identifying the bot assigned to the endpoint comprises determining that deployment of the bot would not exceed a maximum number of bots for a domain in which the bot is to be deployed.

In some embodiments, the persistent storage also contains definitions of one or more queues, wherein the one or more queues are configured to temporarily store work items that are passed between two or more of the bots.

X. Closing

The present disclosure is not to be limited in terms of the particular embodiments described in this application, which are intended as illustrations of various aspects. Many modifications and variations can be made without departing from its scope, as will be apparent to those skilled in the art. Functionally equivalent methods and apparatuses within the scope of the disclosure, in addition to those described herein, will be apparent to those skilled in the art from the foregoing descriptions. Such modifications and variations are intended to fall within the scope of the appended claims.

The above detailed description describes various features and operations of the disclosed systems, devices, and methods with reference to the accompanying figures. The example embodiments described herein and in the figures are not meant to be limiting. Other embodiments can be utilized, and other changes can be made, without departing from the scope of the subject matter presented herein. It will be readily understood that the aspects of the present disclosure, as generally described herein, and illustrated in the figures, can be arranged, substituted, combined, separated, and designed in a wide variety of different configurations.

With respect to any or all of the message flow diagrams, scenarios, and flow charts in the figures and as discussed herein, each step, block, and/or communication can represent a processing of information and/or a transmission of information in accordance with example embodiments. Alternative embodiments are included within the scope of these example embodiments. In these alternative embodiments, for example, operations described as steps, blocks, transmissions, communications, requests, responses, and/or messages can be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved. Further, more or fewer blocks and/or operations can be used with any of the message flow diagrams, scenarios, and flow charts discussed herein, and these message flow diagrams, scenarios, and flow charts can be combined with one another, in part or in whole.

A step or block that represents a processing of information can correspond to circuitry that can be configured to perform the specific logical functions of a herein-described method or technique. Alternatively or additionally, a step or block that represents a processing of information can correspond to a module, a segment, or a portion of program code (including related data). The program code can include one or more instructions executable by a processor for implementing specific logical operations or actions in the method or technique. The program code and/or related data can be stored on any type of computer readable medium such as a storage device including RAM, a disk drive, a solid-state drive, or another storage medium.

The computer readable medium can also include non-transitory computer readable media such as non-transitory computer readable media that store data for short periods of time like register memory and processor cache. The non-transitory computer readable media can further include non-transitory computer readable media that store program code and/or data for longer periods of time. Thus, the non-transitory computer readable media may include secondary or persistent long-term storage, like ROM, optical or magnetic disks, solid-state drives, or compact disc read only memory (CD-ROM), for example. The non-transitory computer readable media can also be any other volatile or non-volatile storage systems. A non-transitory computer readable medium can be considered a computer readable storage medium, for example, or a tangible storage device.

Moreover, a step or block that represents one or more information transmissions can correspond to information transmissions between software and/or hardware modules in the same physical device. However, other information transmissions can be between software modules and/or hardware modules in different physical devices.

The particular arrangements shown in the figures should not be viewed as limiting. It should be understood that other embodiments could include more or less of each element shown in a given figure. Further, some of the illustrated elements can be combined or omitted. Yet further, an example embodiment can include elements that are not illustrated in the figures.

While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purpose of illustration and are not intended to be limiting, with the true scope being indicated by the following claims. 

What is claimed is:
 1. A system comprising: persistent storage containing definitions of (i) assignments of bots to endpoints, (ii) software packages for execution by the bots, (iii) schedules for the bots to execute the software packages, and (iv) processes that associate the bots with the software packages and the schedules; and one or more processors configured to: receive, from a computing device, a request for bot deployment, wherein the computing device includes a bot runtime; identify, in the processes, a bot assigned to an endpoint that is associated with the computing device, wherein the bot is associated with a software package and a schedule; and transmit, to the computing device, data including a representation of the bot, a copy of the software package, and a copy of the schedule, wherein reception of the data causes the bot to execute, using the bot runtime, the software package in accordance with the schedule.
 2. The system of claim 1, wherein the endpoint is the computing device, and the bot is an unattended bot configured to operate autonomously without human interaction.
 3. The system of claim 1, wherein the endpoint is a user associated with the computing device, and the bot is an attended bot configured to operate semi-autonomously with human interaction.
 4. The system of claim 1, wherein the persistent storage also includes access credentials for the computing device, wherein the bot is configured to request and receive the access credentials, and wherein the bot is also configured to use the access credentials to log on to the computing device.
 5. The system of claim 4, wherein the access credentials are part of a credential set, wherein the credential set also contains further credentials for one or more applications, and wherein the bot is also configured to use the further credentials to access the one or more applications.
 6. The system of claim 1, wherein the assignments of bots to endpoints are stored in database tables, wherein the processes that associate the bots with the software packages and the schedules are also stored in the database tables, and wherein the software packages are stored in a software repository that supports versioning of the software packages.
 7. The system of claim 1, wherein an asynchronous message bus communicatively couples the bot to the persistent storage, wherein the bot is subscribed to content within one of more database tables of the persistent storage, and wherein the one or more processors are further configured to: detect a change to the content of the one or more database tables; and transmit, to the bot, a representation of the change.
 8. The system of claim 1, wherein the persistent storage includes access credentials for the endpoints or environment variables for the bots, and wherein the one or more processors are further configured to: receive, from the bot and by way of a representation state transfer (REST) interface, a request for the access credentials or the environment variables; and transmit, to the bot and by way of the REST interface, the access credentials or the environment variables that were requested.
 9. The system of claim 8, wherein one or more of the environment variables are shared by two or more of the bots.
 10. The system of claim 1, wherein the endpoint is deployed on a managed network and the persistent storage is a component of a computing platform that is remote from the managed network.
 11. The system of claim 1, wherein the persistent storage also defines maximum numbers of bots for domains in which the bots are to be deployed, and wherein identifying the bot assigned to the endpoint comprises determining that deployment of the bot would not exceed a maximum number of bots for a domain in which the bot is to be deployed.
 12. The system of claim 1, wherein the persistent storage also contains definitions of one or more queues, wherein the one or more queues are configured to temporarily store work items that are passed between two or more of the bots.
 13. A computer-implemented method comprising: receiving, from a computing device, a request for bot deployment, wherein the computing device includes a bot runtime, and wherein persistent storage contains definitions of (i) assignments of bots to endpoints, (ii) software packages for execution by the bots, (iii) schedules for the bots to execute the software packages, and (iv) processes that associate the bots with the software packages and the schedules; identifying, in the processes, a bot assigned to an endpoint that is associated with the computing device, wherein the bot is associated with a software package and a schedule; and transmitting, to the computing device, data including a representation of the bot, a copy of the software package, and a copy of the schedule, wherein reception of the data causes the bot to execute, using the bot runtime, the software package in accordance with the schedule.
 14. The computer-implemented method of claim 13, wherein the persistent storage also includes access credentials for the computing device, wherein the bot is configured to request and receive the access credentials, and wherein the bot is also configured to use the access credentials to log on to the computing device.
 15. The computer-implemented method of claim 14, wherein the access credentials are part of a credential set, wherein the credential set also contains further credentials for one or more applications, and wherein the bot is also configured to use the further credentials to access the one or more applications.
 16. The computer-implemented method of claim 13, wherein the assignments of bots to endpoints are stored in database tables, wherein the processes that associate the bots with the software packages and the schedules are also stored in the database tables, and wherein the software packages are stored in a software repository that supports versioning of the software packages.
 17. The computer-implemented method of claim 13, wherein an asynchronous message bus communicatively couples the bot to the persistent storage, wherein the bot is subscribed to content within one of more database tables of the persistent storage, the computer-implemented method further comprising: detecting a change to the content of the one or more database tables; and transmitting, to the bot, a representation of the change.
 18. The computer-implemented method of claim 13, wherein the persistent storage also defines maximum numbers of bots for domains in which the bots are to be deployed, and wherein identifying the bot assigned to the endpoint comprises determining that deployment of the bot would not exceed a maximum number of bots for a domain in which the bot is to be deployed.
 19. The computer-implemented method of claim 13, wherein the persistent storage also contains definitions of one or more queues, wherein the one or more queues are configured to temporarily store work items that are passed between two or more of the bots.
 20. An article of manufacture including a non-transitory computer-readable medium, having stored thereon program instructions that, upon execution by a computing system, cause the computing system to perform operations comprising: receiving, from a computing device, a request for bot deployment, wherein the computing device includes a bot runtime, wherein persistent storage contains definitions of (i) assignments of bots to endpoints, (ii) software packages for execution by the bots, (iii) schedules for the bots to execute the software packages, and (iv) processes that associate the bots with the software packages and the schedules; identifying, in the processes, a bot assigned to an endpoint that is associated with the computing device, wherein the bot is associated with a software package and a schedule; and transmitting, to the computing device, data including a representation of the bot, a copy of the software package, and a copy of the schedule, wherein reception of the data causes the bot to execute, using the bot runtime, the software package in accordance with the schedule. 